白金錳序化對於電流驅動翻轉之研究

Effect of PtMn Ordering on Electrically Switching

楊閔富(Min-Fu Yang)

指導教授 ： 賴志煌

國立清華大學/工學院/材料科學工程學系/碩士(2018年)

摘要

本論文旨在研究白金錳在不同序化的條件下對於電流翻轉效應的影響，並為此展開一系列的實驗。實驗內容大抵上可以包括為兩部分：（一）以共濺鍍方式製備白金錳（二）三種白金錳元件的分析。
第一部分主要是利用膜層結構sub/PtMn/Co/Ti 以分析、調整白金錳的性質。這部分的實驗囊括成分、退火時間、退火溫度與白金錳厚度的調整。
在第二部分的實驗設計上，利用第一部份的實驗結果，接續在白金錳上長出具有垂直異向性的鈷白金多層膜。在結構sub/Ti/Pt/PtMn/[Co/Pt]2/Ti 下設計出三種不同白金錳狀態的元件──無序化、序化但沒有交換場、序化且有交換場，並且分析其有效場以及電流翻轉特性。

關鍵字

自旋霍爾效應 ； 白金錳 ； 電流驅動翻轉 ； 序化

並列摘要

The purpose of this thesis is to study the effect of platinum-manganese on current flipping under different conditions. A series of experiments are carried out for this purpose. The experiments can be roughly classified into two parts: (I) Analysis of the preparation of platinum-manganese; (II) analysis of three different platinum-manganese devices.
The first part is mainly about the analysis of platinum manganese with film structure sub/PtMn/Co/Ti. This part of the experiment includes the composition, annealing time, annealing temperature, and platinum manganese thickness adjustment.
In the second part of the experimental design, with the results of the first part of the experiment, the cobalt-platinum multilayers with vertical anisotropy was grown on platinum-manganese. And three devices of the same structure sub/Ti/Pt/PtMn/[Co/Pt]2/Ti but different platinum-manganese conditions—disordering, ordering but without exchange field, ordering with exchange field are discussed. Also the analysis of their effective fields and electrically switching behaviors are studied.

並列關鍵字

Spin ； Hall ； Effect ； PtMn ； Electrically ； Switching ； Ordering

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